AXIAL-FLOW FAN, BLOWING DEVICE, AND REFRIGERATION CYCLE DEVICE

Title:

AXIAL-FLOW FAN, BLOWING DEVICE, AND REFRIGERATION CYCLE DEVICE

Document Type and Number:

WIPO Patent Application WO/2022/091225

Kind Code:

A1

Abstract:

This axial-flow fan has a plurality of blades rotating about a rotation axis of the blades, and generates an air flow. The blades each have a leading edge on the forward side in the direction of rotation, and a trailing edge on the backward side in the direction of rotation. In the trailing edge of the blade is formed a first recess that is recessed toward the leading edge. In the leading edge of the blade is formed a second recess that is recessed toward the trailing edge. Part or all of the radial-direction ranges of the first recess and the second recess overlap each other.

Inventors:

YAMAMOTO KATSUYUKI (JP)
TERAMOTO TAKUYA (JP)
ADACHI NAHO (JP)
IKEDA TAKASHI (JP)
YOSHIDA TAKANORI (JP)

Application Number:

PCT/JP2020/040276

Publication Date:

May 05, 2022

Filing Date:

October 27, 2020

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

F04D29/38

Domestic Patent References:

WO2019030866A1

2019-02-14

Foreign References:

JP2017070337A	2017-04-13
JP2016183643A	2016-10-20
JP2004346775A	2004-12-09
JP2011179330A	2011-09-15
JP2016056772A	2016-04-21

Other References: